258 lines
7.9 KiB
C++
258 lines
7.9 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: component.cxx,v $
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*
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* $Revision: 1.12 $
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*
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* last change: $Author: rt $ $Date: 2005-09-08 09:25:07 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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#ifndef _RTL_STRING_HXX_
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#include <rtl/string.hxx>
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#endif
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#ifndef _OSL_DIAGNOSE_H_
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#include <osl/diagnose.h>
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#endif
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#ifndef _CPPUHELPER_COMPONENT_HXX_
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#include <cppuhelper/component.hxx>
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#endif
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#ifndef _CPPUHELPER_QUERYINTERFACE_HXX_
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#include <cppuhelper/queryinterface.hxx>
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#endif
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#ifndef _CPPUHELPER_TYPEPROVIDER_HXX_
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#include <cppuhelper/typeprovider.hxx>
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#endif
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#include "com/sun/star/uno/RuntimeException.hpp"
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using namespace osl;
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using namespace rtl;
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using namespace com::sun::star;
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using namespace com::sun::star::uno;
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using namespace com::sun::star::lang;
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namespace cppu
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{
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// ----------------------------------------------------
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// class OComponentHelper
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// ----------------------------------------------------
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OComponentHelper::OComponentHelper( Mutex & rMutex ) SAL_THROW( () )
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: rBHelper( rMutex )
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{
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}
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OComponentHelper::~OComponentHelper() SAL_THROW( (RuntimeException) )
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{
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}
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Any OComponentHelper::queryInterface( Type const & rType ) throw (RuntimeException)
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{
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return OWeakAggObject::queryInterface( rType );
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}
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Any OComponentHelper::queryAggregation( Type const & rType ) throw (RuntimeException)
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{
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if (rType == ::getCppuType( (Reference< lang::XComponent > const *)0 ))
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{
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void * p = static_cast< lang::XComponent * >( this );
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return Any( &p, rType );
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}
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else if (rType == ::getCppuType( (Reference< lang::XTypeProvider > const *)0 ))
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{
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void * p = static_cast< lang::XTypeProvider * >( this );
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return Any( &p, rType );
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}
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return OWeakAggObject::queryAggregation( rType );
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}
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void OComponentHelper::acquire() throw ()
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{
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OWeakAggObject::acquire();
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}
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void OComponentHelper::release() throw()
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{
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Reference<XInterface > x( xDelegator );
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if (! x.is())
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{
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if (osl_decrementInterlockedCount( &m_refCount ) == 0)
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{
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if (! rBHelper.bDisposed)
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{
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Reference<XInterface > xHoldAlive( *this );
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// First dispose
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try
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{
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dispose();
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}
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catch (::com::sun::star::uno::RuntimeException & exc)
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{
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// release should not throw exceptions
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#if OSL_DEBUG_LEVEL > 0
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OString msg( OUStringToOString( exc.Message, RTL_TEXTENCODING_ASCII_US ) );
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OSL_ENSURE( 0, msg.getStr() );
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#endif
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}
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// only the alive ref holds the object
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OSL_ASSERT( m_refCount == 1 );
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// destroy the object if xHoldAlive decrement the refcount to 0
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return;
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}
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}
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// restore the reference count
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osl_incrementInterlockedCount( &m_refCount );
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}
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OWeakAggObject::release();
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}
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Sequence< Type > OComponentHelper::getTypes() throw (RuntimeException)
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{
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static OTypeCollection * s_pTypes = 0;
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if (! s_pTypes)
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{
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MutexGuard aGuard( Mutex::getGlobalMutex() );
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if (! s_pTypes)
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{
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static OTypeCollection s_aTypes(
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::getCppuType( (const Reference< lang::XComponent > *)0 ),
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::getCppuType( (const Reference< lang::XTypeProvider > *)0 ),
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::getCppuType( (const Reference< XAggregation > *)0 ),
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::getCppuType( (const Reference< XWeak > *)0 ) );
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s_pTypes = &s_aTypes;
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}
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}
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return s_pTypes->getTypes();
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}
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// XComponent
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void OComponentHelper::disposing()
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{
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}
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// XComponent
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void OComponentHelper::dispose()
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throw(::com::sun::star::uno::RuntimeException)
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{
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// An frequently programming error is to release the last
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// reference to this object in the disposing message.
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// Make it rubust, hold a self Reference.
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Reference<XComponent > xSelf( this );
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// Guard dispose against multible threading
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// Remark: It is an error to call dispose more than once
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sal_Bool bDoDispose = sal_False;
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{
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MutexGuard aGuard( rBHelper.rMutex );
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if( !rBHelper.bDisposed && !rBHelper.bInDispose )
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{
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// only one call go into this section
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rBHelper.bInDispose = sal_True;
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bDoDispose = sal_True;
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}
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}
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// Do not hold the mutex because we are broadcasting
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if( bDoDispose )
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{
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// Create an event with this as sender
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try
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{
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try
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{
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Reference<XInterface > xSource(
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Reference<XInterface >::query( (XComponent *)this ) );
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EventObject aEvt;
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aEvt.Source = xSource;
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// inform all listeners to release this object
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// The listener container are automaticly cleared
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rBHelper.aLC.disposeAndClear( aEvt );
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// notify subclasses to do their dispose
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disposing();
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}
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catch (...)
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{
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MutexGuard aGuard( rBHelper.rMutex );
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// bDispose and bInDisposing must be set in this order:
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rBHelper.bDisposed = sal_True;
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rBHelper.bInDispose = sal_False;
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throw;
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}
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MutexGuard aGuard( rBHelper.rMutex );
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// bDispose and bInDisposing must be set in this order:
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rBHelper.bDisposed = sal_True;
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rBHelper.bInDispose = sal_False;
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}
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catch (RuntimeException &)
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{
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throw;
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}
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catch (Exception & exc)
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{
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throw RuntimeException(
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OUString( RTL_CONSTASCII_USTRINGPARAM(
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"unexpected UNO exception caught: ") ) +
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exc.Message, Reference< XInterface >() );
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}
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}
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else
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{
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// in a multithreaded environment, it can't be avoided,
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// that dispose is called twice.
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// However this condition is traced, because it MAY indicate an error.
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OSL_TRACE( "OComponentHelper::dispose() - dispose called twice" );
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}
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}
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// XComponent
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void OComponentHelper::addEventListener(
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const Reference<XEventListener > & rxListener )
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throw(::com::sun::star::uno::RuntimeException)
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{
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ClearableMutexGuard aGuard( rBHelper.rMutex );
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if (rBHelper.bDisposed || rBHelper.bInDispose)
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{
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aGuard.clear();
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Reference< XInterface > x( (XComponent *)this, UNO_QUERY );
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rxListener->disposing( EventObject( x ) );
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}
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else
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{
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rBHelper.addListener( ::getCppuType( &rxListener ) , rxListener );
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}
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}
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// XComponent
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void OComponentHelper::removeEventListener(
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const Reference<XEventListener > & rxListener )
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throw(::com::sun::star::uno::RuntimeException)
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{
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rBHelper.removeListener( ::getCppuType( &rxListener ) , rxListener );
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}
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}
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